Torque reaction pulley for an inertia cone crusher
a technology pulley, which is applied in mechanical equipment, hoisting equipment, grain treatment, etc., can solve the problems of crushing shell to gyrate, main shaft, crushing head, etc., and achieve the effect of reducing the number of inertia cone crushers
Inactive Publication Date: 2018-12-27
SANDVIK INTELLECTUAL PROPERTY AB
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The present invention provides a drive transmission coupling for an inertia crusher that prevents torque from being transmitted to the crusher and its components. The coupling is designed to deflect and dissipate mechanical loading torque caused by the unbalanced weight of the crusher. This prevents damage and wear to the drive transmission components. The coupling allows for non-circular motion of the crusher head and accommodates changes in the torque resulting from this movement. The torque reaction pulley is flexible and dynamically responsive to changes in the rotational path and speed of the crusher head, providing a flexible linkage to accommodate undesired and unpredicted torsion.
Problems solved by technology
Such rotation causes the unbalance weight to rotate about the a central axis of the main shaft, causing the main shaft, the crushing head and the inner crushing shell to gyrate and to crush material fed to the crushing chamber.
However, conventional inertia crushers whilst potentially providing performance advantages over eccentric gyratory crushers, are susceptible to accelerated wear and unexpected failure due to the high dynamic performance and complicated force transmission mechanisms resulting from the unbalanced weight rotating around the central axis of the crusher.
In particular, the drive mechanism that creates the gyroscopic precision of the unbalanced weight is exposed to exaggerated dynamic forces and accordingly component parts are susceptible to wear and fatigue.
Current inertia cone crushers therefore may be regarded as high maintenance apparatus which is a particular disadvantage where such crushers are positioned within extended material processing lines.
Method used
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Embodiment Construction
[0043]FIG. 1 illustrates an inertia cone crusher 1 in accordance with one embodiment of the present invention. The inertia crusher 1 comprises a crusher frame 2 in which the various parts of the crusher 1 are mounted. Frame 2 comprises an upper frame portion 4, and a lower frame portion 6. Upper frame portion 4 has the shape of a bowl and is provided with an outer thread 8, which cooperates with an inner thread 10 of lower frame portion 6. Upper frame portion 4 supports, on the inside thereof, a concave 12 which is a wear part and is typically cast from a manganese steel.
[0044]Lower frame portion 6 supports an inner crushing shell arrangement represented generally by reference 14. Inner shell arrangement 14 comprises a crushing head 16, having a generally coned shape profile and which supports a mantle 18 that is similarly a wear part and typically cast from a manganese steel. Crushing head 16 is supported on a part-spherical bearing 20, which is supported in turn on an inner cylind...
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Description
FIELD OF INVENTION[0001]The present invention relates to a torque reaction pulley positionable within the drive transmission of an inertia cone crusher and in particular, although not exclusively, to a torque reaction pulley configured to dissipate changes in torque created by the rotation of an unbalanced mass body within the crusher.BACKGROUND ART[0002]Inertia cone crushers are used for the crushing of material, such as stone, ore etc., into smaller sizes. The material is crushed within a crushing chamber defined between an outer crushing shell (commonly referred to as the concave) which is mounted at a frame, and an inner crushing shell (commonly referred to as the mantle) which is mounted on a crushing head. The crushing head is typically mounted on a main shaft that mounts an unbalance weight via a linear bushing at an opposite axial end. The unbalance weight (referred to herein as an unbalanced mass body) is supported on a cylindrical sleeve that is fitted over the lower axial...
Claims
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IPC IPC(8): B02C2/04F16H55/36F16F15/12
CPCB02C2/042F16H55/36F16F15/1201F16H2055/366B02C2/04
InventorFREDRIKSSON, MAGNUSHOLSTEIN, MARTINGUNNARSSON, JOHANLINDVALL, JONAS
OwnerSANDVIK INTELLECTUAL PROPERTY AB